Semidetached systems of spectral type B: BF Aurigae,. mu. /sup 1/ Scorpii, and V Puppis
The photoelectric observations of BF Aur by Mannino, Bartolini, and Biolchini, ..mu../sup 1/ Sco by Stibbs, and V Pup by Hogg were analyzed with the Wilson and Devinney approach. All three systems were found to have semidetached configurations, and improved absolute dimensions are presented. V Pup and ..mu../sup 1/ Sco are presently in the slow phase of case A mass exchange; the primaries are still on the main sequence. The primary of ..mu../sup 1/ Sco does not appear underluminous as has been reported, while the primary of V Pup may be underluminous by over 1 magnitude. BF Aur is one of the very few systems with the semidetached component being the more massive one. Due to uncertainties in the spectroscopic orbit a unique model cannot be presented, but one with a mass ratio of 0.83 is the most consistent with the observations. Since all three systems are evolved, they have no direct relevance to the theory of stellar fission. Based on a survey of 13 close binaries it is found that classical approaches cannot determine whether such systems are detached, semidetached, or in contact.
- Research Organization:
- Hale Observatories, California Institute of Technology, Carnegie Institution of Washington, Pasadena, California 91101
- OSTI ID:
- 6468102
- Journal Information:
- Astron. J.; (United States), Vol. 84:2
- Country of Publication:
- United States
- Language:
- English
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